JPH0423377Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention is a rake-in rotary body that is placed behind a lifting device with three or more rows and that scrapes the root side of the grain culm of each row toward the rear of the machine. are arranged side by side on the left and right, and a pair of left and right first
The stock head clamping and conveying device is configured to extend rearward in a narrowed manner so that the harvested grain culms join together at the end of the conveyance, and the stock head of the combined grain culm is connected to a threshing feed arranged along one side of the machine body. The present invention relates to a grain culm conveying structure for a combine that is provided with a second grain clamping and conveying device that conveys grain toward the starting end of a chain, and more specifically, to an improvement for shortening the longitudinal length of the conveying structure.

[Conventional technology]

Conventionally, as an example of a grain culm conveying structure having the above structure, there is one shown in Japanese Utility Model Application Publication No. 57-28624. In other words, in this example, as shown in FIG.
B, 12C, a pair of left and right first stock transfer devices 14
a, 15a, a pair of left and right first tip conveying devices 14
b, 15b, and the second stock head clamping and conveying device 17, etc., which feed the harvested grain culm to the feed chain 11 on the left side of the machine, and the first stock source conveying device on the right side of the machine. The grain culm conveying structure is achieved by setting the conveying end of the grain culm conveying device 15a as close to the feed chain 11 as short a distance as possible, specifically, by setting the conveying angle of the first stock conveying device 15a to follow the left-right direction of the machine as much as possible. In addition to shortening the front-to-back length, the central scraping rotary body 12B is set to have a small diameter in order to avoid interference between the conveyance path D of the first stock transfer device 15a and the central scraping rotary body 12B. .

[The problem that the idea aims to solve]

However, while the grain culm conveying structure with the above configuration allows the longitudinal length to be set small, the center raking rotor is set to a small diameter, so the raking speed of the raking rotor on the right side of the machine and the central raking rotation are Because it is necessary to equalize the raking speed of the grain culm, a special transmission structure is required. Since the rotation radii that act on the grain culm are different, the posture of the raked grain culm tends to be disturbed, and furthermore, since the raking rotating bodies of the same shape are not used, there is a problem that the versatility of the parts is reduced and the manufacturing cost is increased. Ta.

In order to solve this problem, we used scraping rotors with the same diameter and moved the central scraper rotor to the front of the machine to avoid interference with the transport path of the first stock clamping and transport device. Although an attempt may be made to shorten the longitudinal length of the grain culm conveying structure, the longitudinal length of the grain culm conveying structure increases by the distance that the raking rotor is displaced, so the longitudinal length cannot be shortened in the end.

The purpose of this invention is to set a plurality of raking rotors with the same diameter, arrange them in a straight line in the left-right direction of the machine, and streamline the grain culm conveying structure in which the longitudinal length is shortened. It consists in structuring it in a specific manner.

[Means to solve the problem]

As mentioned at the beginning, the feature of this invention is that a plurality of scraping rotors are arranged side by side on the left and right behind the lifting device.
A combine harvester configured to merge a pair of left and right first stock head clamping and conveying devices at the rear, and provided with a second stock head clamping and conveying device that conveys the joint heads of the merged grain culm toward the starting end of a threshing feed chain. In the grain culm conveying structure, an elastic clamping rail is provided at a rear position of the raking rotary body that supplies the grain culm to the intermediate portion of the first stock clamping and conveying device, overlapping the raking rotary body in plan view. At the same time, the posture of this elastic clamping rail is aligned with the rotational direction of the scraping rotary body, and is brought into pressure contact with the conveyance chain of the first stock clamping and conveying device, so that the position of the elastic clamping rail is aligned with the rotational direction of the scraping rotary body, and the elastic clamping rail is brought into pressure contact with the conveyance chain of the first stock stock clamping conveyance device, so that The conveying chain is curved in a concave manner, and its functions and effects are as follows.

[Function] In other words, since the elastic clamping rail is arranged so as to overlap the raking rotary body as described above, when the raking rotary body rotates, an outward force is applied to the grain culm due to the rotational force. However, the elastic clamping rail prevents the grain culm from moving outward, and since the posture of the elastic clamping rail is set in the direction of rotation of the rake rotor, this rail prevents the grain culm from moving outward. It does not interfere with transportation.

In addition, since the conveyance chain is curved in a concave manner by pressing the elastic clamping rail against the conveyance chain, for example, the conveyance angle of the conveyance chain can be set in a direction along the left-right direction of the fuselage to shorten the longitudinal length of this conveyance structure. In addition, even if the diameters of the plurality of raking rotors are set to be the same, a recess is formed at the rear of the raking rotary body that supplies grain culms in the intermediate portion of the stock conveying chain of the first conveying device. Therefore, it is possible to suppress contact between the scraping rotary body and the conveyance chain.

In other words, with this invention, it is also possible to use raking rotors with the same diameter, and when raking rotors with the same diameter are used, it is possible to rak the grain culm compared to the conventional example. Sometimes, equal force is applied to the grain culm from both sides to suppress the disturbance in the posture of the transported grain culm, and moreover, it is possible to reliably merge the grain culm from the raking rotary body without disturbing the posture.

[Effect of idea]

Therefore, by setting a plurality of raking rotary bodies to have the same diameter, they can be arranged in a straight line in the left-right direction of the machine, shortening their front-to-back length, and also improving the grain culm conveying posture. This enabled us to rationally construct a grain culm transport structure that does not easily cause turbulence.

〔Example〕

Hereinafter, embodiments of the present invention will be described based on the drawings.

As shown in FIGS. 1 and 5, an engine 3 and a threshing device 4 are mounted on a traveling body 2 equipped with a pair of left and right crawler traveling devices 1, 1, and a seat 5.
A combine harvester is constructed by forming a boarding and operating section A with a board and operating section A, and connecting a reaping pre-processing section B that can be raised and lowered by a hydraulic cylinder 6 around an axis P formed in the front part of the traveling machine body 2 and oriented to the left and right of the machine body. .

The reaping pre-processing section B includes a transmission frame 7 connected to the machine body so as to be vertically swingable around the axis P;
A plurality of weeding tools 8..., four sets of pulling devices 9 for raising the planted grain culms to a standing position, a clipper-type reaping device 10 for cutting the stock base of the planted grain culms, and the reaped grain culms as described above. It consists of means F for conveying and feeding to the feed chain 11 provided on the left outer surface of the threshing device 4, and is described below.
The conveyance means will be explained in detail.

As shown in FIG. 1, above the reaping device 10, raking rotary bodies 12a, 12b, 12c, and 12d for raking four rows of reaped grain culms backward are arranged linearly in parallel in the left-right direction of the machine. , an auxiliary conveying device 13 consisting of front and rear pulleys 13a, 13 and a belt with protrusions 13c is provided from the top of each to the front.

Then, the two central scraping rotors 12b, 1
2c are adjacent outer scraping rotary bodies 12;
A pair of rake rotors 12a and 12d are interlocked with the rake rotors 12a and 12d, and rotate together by driving and rotating the rake rotors 12a and 12d at the left and right ends, so that two rows of reaped grain culms on the left and right sides are opposed to each other. 12a, 12b, 1
2c and 12d, the grass is immediately raked and merged after being harvested, and then raked backward.

In addition, the raking rotary bodies 12a and 12d at the left and right ends support the harvested grain culm in an upright position on the upper part thereof.
A pair of left and right first conveyance devices 1 that convey rearward and upward.
4 and 15 are provided. Each conveyance device 14, 15 consists of a first clamping conveyance device 14a, 15a and a first locking conveyance device 14b, 15b, and a conveyance chain C forming each stock clamping conveyance device 14a, 15a.
is also used as a drive chain for the scraping rotors 12a and 12d.

Both conveying devices 14 and 15 are arranged in a V-shape that narrows at the rear, and the grain culms of the two systems are finally merged at a position near the center of the cutting width at a suitable distance behind the reaping device 10.

In addition, the first locking conveyance device 15b of the first conveyance device 15 on the right side of the machine body is extended rearward toward the front end side of the feed chain 11, and a relay clamping conveyance device 16 is installed at the lower part of the conveyance terminal side. It has been done.

Further, a second stock head conveying device 17 is installed in a cantilevered manner from the lower part of the grain culm merging point toward the rear, and the merged grain culm is locked with the second stock head clamping and conveying device 17. After being supported and transported in two stages, upper and lower, by the rear half of the transport device 15b, the materials are turned sideways and fed to the front portion of the feed chain 11.

By configuring the second stock head clamping and conveying device 17 to be able to swing vertically around the fulcrum axis X on the front end side, grain culms can be shifted in the culm direction with respect to the feed chain 11. , a function is provided to adjust the amount of insertion into the threshing device 4, so-called handling depth.

The first holding and conveying device 15a on the right side is arranged so that the lower side end of the conveyor is inclined toward the feed chain side of the machine body 2, that is, toward the left side, so that the longitudinal length of the reaping pretreatment section B can be shortened. In order to avoid interference between the conveying path of the conveying device 15 and the adjacent scraping rotary body 12c due to this inclination, the following structure is adopted.

That is, as shown in FIGS. 1 to 4, the pulley 13b of the auxiliary conveying device 13 is attached to the upper end of the rotating shaft 18 of the scraping rotor 12c, and a cover 19 is further provided above.

The level of the chain C is set so that it is located vertically midway between the scraping rotary body 12c and the pulley 13b, and its tip is positioned within the rotation locus of the scraping rotary body 12c. An elastic clamping rail 20 is provided which is inserted into the housing.

The front part of the elastic clamping rail 20 is connected to the conveyor chain C.
The conveying chain C is curved in a concave manner by pressing against the conveying chain C to avoid interference between its conveying path and the scraping path of the scraping rotary body 12c, and overlaps with the scraping rotary body 12c in plan view. It is arranged so that its posture is along the rotational direction of the scraping rotary body 12c, and a gap is formed between it and the conveyance chain C in the rear half.

The elastic force of coil springs 21 and 22 provided at the front and rear to elastically support the rail 20 toward the chain C side is set to be larger at the front than at the rear.

Moreover, the rail 2 is provided on the back side of the conveyance chain C.
A guide rail 23 is provided at a position extending rearward from approximately the middle of the grain culm, so that the elastic clamping rail 20 does not displace too much even when the grain culm is transported, and the curved portion is stabilized. It is becoming more and more maintained.

Note that 24 in the figure is a device for maintaining the tension of the conveyance chain C of the first clamping and conveying device 15a, and includes an arm 24a, a wheel 24b that interferes with this, and
It also includes a spring 24c that biases the arm 24a.

[Another example]

Although this embodiment is applied to a combine harvester with four rows, it may be applied to a combine harvester with three or more rows, and the coil spring 2
1 and 22, it is also possible to use leaf springs.

[Brief explanation of the drawing]

The drawings show an embodiment of the grain culm conveying structure of a combine harvester according to the present invention, in which Fig. 1 is a schematic plan view, Fig. 2 is a plan view of the front part of the elastic clamping rail, and Fig. 3 is a cross section taken along the line - in Fig. 2. FIG. 4 is a sectional view of the scraping rotor and the elastic clamping rail, FIG. 5 is a side view of the front part of the combine, and FIG. 6 is a schematic plan view showing a conventional example. 9... Lifting device, 11... Feed chain, 12, 12a, 12d, 12c... Scratching rotary body, 14a, 15a... First stock head clamping conveyance device, 17... Second stock base clamping conveyance Device, 20...Elastic clamping rail, C...Transportation chain.

Claims (1)

[Scope of utility model registration request] Behind the pulling device 9 of three or more rows, scraping rotors 12 for scraping the stock side of the grain culm of each row toward the rear of the machine are installed side by side on the left and right. A pair of left and right first stock root clamping and conveying devices 14a and 15a are configured to extend rearward from the rotation axes of 12a and 12d in a narrowed rearward manner so that the harvested grain culms are joined at the conveyance terminal side, and The grain culm conveying structure of a combine harvester is provided with a second stock head clamping and conveying device 17 that transports the joint head of the merged grain culm toward the starting end of a threshing feed chain 11 arranged along one side of the machine body. , an elastic clamping rail 20 is disposed at a rear position of the raking rotary body 12c that supplies the grain culm to the intermediate portion of the first stock head clamping and conveying device 15a, so as to overlap the raking rotary body 12c in plan view. At the same time, the posture of the elastic clamping rail 20 is aligned with the rotational direction of the scraping rotary body 12c, and is brought into pressure contact with the conveying chain C of the first stock clamping and conveying device 15a, so that the posture of the elastic clamping rail 20 is aligned with the rotation direction of the scraping rotary body 12c, and the position is pressed against the conveying chain C of the first stock clamping conveyance device 15a, so that the position of the elastic clamping rail 20 is aligned with the rotation direction of the scraping rotary body 12c. Grain culm conveyance structure of a combine in which the conveyance chain C at the part is curved in a concave manner.